Data Transmission and Packet Switching

Front

What is the structure of data packets?

Back

Data packets are smaller parts of data, usually around 64 KiB, split for easier transmission.

Front

Why is data split into packets for transmission over long distances?

Back

Splitting data into packets makes it easier and faster to send as smaller parts can take different routes.

Front

What happens if some data packets are lost during transmission?

Back

The message would be incomplete, so networks use checks to detect and resend missing packets.

Front

What is packet switching?

Back

A method of transmitting data by breaking messages into packets that are sent independently.

Front

How are data packets reassembled at their destination?

Back

Using information in the packet header to put them in the correct order.

Front

What role do routers play in packet switching?

Back

Routers determine the best route for each packet to reach its destination.

Front

What is the base of a hexadecimal number system?

Back

Base 16.

Front

What is the base of a binary number system?

Back

Base 2.

Front

What is two's complement in data representation?

Back

It’s a method of changing a number from positive to negative.

Front

What is the difference between lossy and lossless data compression?

Back

Lossless allows data reconstruction, while lossy doesn’t allow recovery of the original data.